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Which lamp has the highest energy efficiency?

AIncandescent Lamp

BLED Lamp

CCFL

DArc Lamp

Answer:

B. LED Lamp

Read Explanation:

  • LED stands for light emitting diode.
  • LEDs are used as indicator lamps in many devices, and are increasingly used for lighting.
  • These have lower energy consumption, longer lifetime, smaller size, faster switching as compared to other light sources used in our daily life.

Related Questions:

Which of the following statements is/are true for a DC motor?

  1. (1) The function of the split rings is to reverse the flow of current.
  2. (ii) Maximum force is experienced by arms of the coil aligned parallel to the magnetic field
  3. (iii) Reversing current after every half rotation leads to continuous rotation of coil
    The magnetic field produced due to a circular coil carrying a current having six turns will be how many times that of the field produced due to a single circular loop carrying the same current?
    State two factors on which the electrical energy consumed by an electric appliance depends?

    Which of the following devices is/are based on heating effect of electric current?

    1. (i) Incandescent lamp
    2. (ii) Electric geyser
    3. (iii) Electric generator
      The resistance of a wire of length Land area of cross-section A is 1.0 Ω . The resistance of a wire of the same material, but of length 41 and area of cross-section 5A will be?